Since 1979, has been the world's leading manufacturer of gemological instruments. has developed a range of instruments to test diamonds and gemstones for the jewelry industry.

remains dedicated to serving the needs of the jewelry industry with innovative products, quality engineering, and excellent customer service.

Today, Instruments are available across more than 40 countries worldwide.

's range of products are used in gemological institutes, laboratories, jewelry manufacturers, diamond appraisal business, and retail jewelers globally.

PRODUCT COMPATIBILITY: For use with Gem Tester II (PGT II) and Duo Tester II (PDT II) only.
INDUSTRIES MOST TRUSTED: Titanium Probe Pen for replacement if your probe pen is missing or damaged.
THINNEST RETRACTABLE PROBE TIP: Features the industry’s thinnest retractable probe tip that ensures consistent pressure against the gemstone during testing.
VERSATILE AND RELIABLE: Consistent and reliable results every time.
IMPORTANT TO NOTE: This product needs to be calibrated prior to use. If you experience issues with calibration, please reach out to the seller for assistance prior to returning the item.